How much does a builder's report cost in New Zealand?

A standard pre-purchase inspection on a typical residential house generally runs somewhere between $500 and $1,200, depending on the size of the house, the region, and whether you add extras like moisture testing or a methamphetamine test. Get a written quote that states exactly what is and isn't included.

How long does a builder's report take?

The inspection itself usually takes two to three hours. Most inspectors turn the written report around within one to two working days. In a busy market the bottleneck is getting a booking, not the report itself, so ring around the day your offer is accepted.

Is a builder's report compulsory when buying a house in NZ?

No. It is not legally required. But making your offer conditional on a satisfactory building report is standard practice, and going without one on an unconditional offer means you accept the building exactly as it stands, faults included.

What is NZS 4306 and why does it matter?

NZS 4306:2005 is the New Zealand Standard for residential property inspections. A report written to that standard has a defined scope and structure, which means you can compare it to another one and you know what should be in it. Ask whether the inspection will comply with it before you book.

Builder's report NZ: what it costs, what it covers, what it misses

A builder’s report is a physical inspection of the house by someone who knows what they’re looking at. It is the counterpart to the LIM: the LIM tells you what the council has on file, the builder’s report tells you what is actually happening to the building right now.

Order both. They find different problems.

What it costs and how long it takes

Expect somewhere in the region of $500 to $1,200 for a standard residential inspection, more for a large or complex house, more again if you add moisture testing or a meth test. The inspection takes a couple of hours; the written report usually lands within a day or two.

The real constraint is booking. Good inspectors are busy, and your conditional period is short. Ring on the day your offer is accepted.

Ask these four questions before you book

“Will the report comply with NZS 4306?” That’s the New Zealand Standard for residential inspections. It defines the scope, so you know what you’re getting and you can compare quotes meaningfully.

“What insurance do you carry?” Professional indemnity insurance matters, because it is what stands behind the report if they miss something significant.

“Can I see a sample report?” Quality varies enormously. Some reports are twenty pages of photographs and specifics. Some are four pages of hedging. Look at one before you pay.

“Can I come along?” Say yes if they let you. Two hours walking around with an inspector teaches you more about the house than the report will, because you can ask “how bad is that, really” and get an honest verbal answer that will never appear in writing.

What a good report covers

Roof, cladding and joinery — the weathertightness envelope
Subfloor and foundations, including any signs of movement
Roof space: framing, insulation, ventilation, evidence of leaks
Moisture readings in the areas that typically fail
Decks, retaining walls, fences and site drainage
Visible plumbing and the visible parts of the electrical system
An assessment of the likely remaining life of major elements

What it will not cover

This is where people get caught. A standard visual inspection is non-invasive. The inspector does not lift carpet, cut into walls, or dismantle anything.

That means it generally excludes anything hidden behind linings, the condition of the wiring inside the walls, the state of the drains beyond what’s visible, and anything under the floor covering. If the house is a weathertightness risk profile — monolithic cladding, mid-90s to mid-2000s, minimal eaves — a standard visual inspection is not enough on its own, and you should ask about invasive moisture testing.

Compliance of the electrical or plumbing work is a separate trade’s job. So is a full drainage inspection with a camera.

Read the qualifiers, not the summary

The single most useful skill in reading a builder’s report is noticing the hedged language.

“No evidence of moisture ingress was observed at the time of inspection in the areas accessible.”

That sentence is not “the house is dry.” It is four qualifiers stacked up: no evidence, observed, at that time, in accessible areas. Every one of them is doing work.

When you see phrasing like that in an area you care about, ring the inspector and ask directly: what would it take to find out properly, and what would that cost? They will usually tell you.

Turning the report into a decision

A report with problems in it is not automatically a reason to walk. Almost every house has something. What you want is a number: what will it cost to fix, and who pays.

If it’s significant, get a quote from a builder before your condition date. A written quote turns a vague worry into a negotiating position — either a price reduction, or the vendor fixing it before settlement, or a holdback at settlement.

If the report finds something serious and you can’t get a quote in time, that is a reason to ask for an extension, not a reason to hope.

Official sources

Information only — not financial or legal advice. Always confirm with your own lawyer and a licensed adviser.